Shut-off for hose-nozzles



UNITED STATES PATENT OFFICE.

WILLIAM T. KING, OF CAMBRIDGE, ASSIGN OR OF ONE-HALF TO CHARLES E.BERRY, OF WVATERTOWVN, MASSACHUSETTS.

SHUT-OFF FOR HOSE-NOZZLES.

SPECIFiGA'IION forming part of Letters Patent No. 403,053, dated May '7,1889.

[Application filed October 18, 1888. Serial No. 288,439. (No modeL) Toall whom it may concern:

Be it known that I, WILLIAM '1. KING, of Cambridge, county of Middlesex,State of Massachusetts, a citizen of the United States, have invented anImprovement in Shut-Ofis for Hose-Nozzles, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing like parts.

This invention has for its object to construct a shutoff forhose-nozzles, and also to provide means whereby air may be drawn fromthe stream as it passes through the nozzle to thereby afford a suitablesupply of air in places filled with smoke.

In accordance with this invention the hosenozzle has secured to itecoentrically a chambered plate or disk, and an internally-screwthreadedcap is turned upon the said plate or disk, said cap having a holethrough it at one side of the center,- which in one position of the capregisters with the nozzle; but when the said cap is turned a part of arevolution the nozzle will be completely closed by the cap. The capforms one wall of the chamber formed within the plate or disk, and ahole is formed through the side wall of the chamber, through which airmay be drawn from the chamber, and as the cap is turned into theposition wherein the hole therein registers with the nozzle it is liftedby its screwthreaded connection a little above or beyond the end of thenozzle, so that the air contained in the stream issuing from the nozzlemay pass out concentrically with the stream into the chamber and bedrawn therefrom by the pipe-ma11 at the hole in the cap. A suitablelimiting-stop is provided for limitingthe move ment of the cap in onedirection, and the end or face of the cap, striking the end of thenozzle, limits the movement of the cap in the other direction.

Figure 1 shows an end view of the shut-off for a hose-nozzle, theorifice of the nozzle being unobstructed to permit a stream to issuetherefrom; Fig. 2, a similar view, the cap being turned to close theorifice of the nozzle and Fig. 3, a vertical. section of the hose-nozzleand its shut-off.

The hose-nozzle a (see Fig. 3) is of usual construction, it havingsecured to its end eccentrically as by screw threads a plate or disk,I). The plate or disk I) is hollowed out or chambered and has on itsperimeter screwthreads. A cap, 0, having internal screwthreads is turnedupon the plate or disk, inclosing it. The cap 0 has a hole, 0', throughit at one side of the center. (See Figs. 1 and 2.)

When the cap 0 is completely turned on the screw-threaded plate or disk,the top of the cap strikes or bears on or against the end of the nozzlea, closing it; but by turning the cap a partial revolutionthe hole 0registers with the orifice of the nozzle, affording a passage for thestream.

I preferably cut away the interior of the side Wall of the plate or disk(see Fig. 3) for a short distance to present a groove or passage, d,having an inclined bottom, and provide the cap with a screw or pin, 5,the shank of which enters the groove or passage, so that as the cap a isturned in the direction of the arrow, Fig. 2, the said screw or pin willbind firmly when the hole 0 registers with the orifice of the nozzle,thereby serving as a limiting-stop.

As the cap 0 is turned, so that the hole 0 registers, as aforesaid, itis lifted free from contact with the end of the nozzle, (see Fig. 3,)leaving a small space, and the side walls of both the plate or disk andcap are provided with holes 2 3, which register at such time to permitair being withdrawn from the chamber, which issuing from the stream atthe small space at the end of the nozzle provides a supply of fresh airsurrounding the stream and filling the chamber, greatly facilitating thework of the pipe-man in smoky places by providing means whereby the aircontained in the stream of water may be utilized. k

The hole in cap 0 is made a little larger than the orifice in thenozzle, so that the exit of the stream may be unimpeded, thus preventingthe chamber from filling with water.

WVhen in use ordinarily, the nozzle will act to a certain extent as aninjector, air being drawn through the holes 2 3 by the issuing stream;but when smoke is encountered the pipe=man places his lips to the hole 3and draws in his breath,such action giving to him a sufficient portionof the air contained in the stream to enable him to breathe.

I claim- 1. The chambered plate or disk I), externally screw-threaded,and the nozzle a, eceentrieally secured in said plate or disk, the endof the said nozzle projecting beyond the surface of said plate or disk,combined with the cap 0, internally screw-threaded to be turned upon theplate or disk and having the hole 0' of larger diameter than theinternal diameter of the end of the nozzle, whereby the water hasunimpeded exit, substantially as and for the purposes set forth.

2. he nozzle a and the eecentrieally-secured chambered plate or disk I),externally screw-tln'eaded and having the hole 2, com-

